You can also see clearly in the footage that there is loads of space in the pens on either side of the central one where people were crushed. The problem was the fans all headed for the central pen and couldn't get out. That could have been prevented.
The Taylor Report stated there were not a large number of ticketless fans. Where is the evidence for that?
Was it really only Liverpool and Everton fans who arrived late at grounds just before kick off? Are you seriously suggesting no other clubs did this? Of course, no other teams have fans...